The problem is... insane statements like these. If you don't know what you are talking about, you don't need to always have an opinion. Nash is one of the top defensive forwards in the league, he's huge, and he scores like a first liner (top-90 forwards overall and per game) even in his bad years. Considering that you don't need to give him a 7-year contract like you would to a first line UFA, he has a great contract. If you sign a UFA first liner, you'll pay just as much, but with 5 extra years that will come on the tail end of the guy's career.
Not only will the Rangers get a first rounder for him, they will REFUSE to trade him for just a first liner, I guarantee you that. They will get much more.
Look at what the Rangers got for Gaborik who was making almost exactly the same (when the cap was lower) and had very similar career stats, BUT had massive injury problems, was in the middle of a worse year than Nash just had, was seen as soft which Nash never is, and was never anywhere close to as good defensively as Nash. The Rangers got a very good top-6 25-year-old center (Brassard), a 4th liner for whom they got a 3rd rounder (Dorsett) and a young top-6 defenseman (Moore). Brassard at the age of 25 and a cheap $3M contract alone is worth far more than a first rounder, not to mention that both Dorsett and Moore had value.
Considering that Gaborik:
1. Earned a greater percentage of the cap than Nash;
2. Had a worse year and a similar offensive career;
3. Was much worse defensively;
4. Not as physical;
5. MUCH more injured;
Nash should bring in more than what Gaborik brought back. The idea that Nash has little to no value is nuts.